Twisting device



Aug. 22, 1933- G. H. GILLIGAN TWISTING DEVICE Filed Feb. 2, 1933 arzff]Patented Aug. 22, 1933 UNITED STATES PTIEINT OFFICE 10 ClaimsI (Cl.118-59) My' invention relates to rings and travelers for twistingframes, and more particularly to vertical travelers.

In the twisting operation, the thread occasionally completely escapesfrom the traveler, and

unless this is discovered and the thread manually replaced, winding uponthe spindle necessarily ceases.

The escape of the thread usually occurs when the traveler is at restupon its ring, or when the spindle is inactive during a continuoustraverse movement of the ring rail, a condition prevalent in certaintypes of silk twisting frames where excessive twist occurs, such as increpe and like twists.

The escape under these conditions is due to the fact that the yarnpassing through the traveler between the delivery rolls and spindle isunder high torsion, the twist therein often exceeding 20 ninety turns tothe inch and even inducing kinks in the thread. Therefore whenlengthwise tension upon the thread is relaxed, as is the case when thetraveler is at rest, the thread, by its stored up torsional energy,moves or crawls over downwardly through the space which is presentbetween the outer face of the ring and the horn tip of the common formof traveler.

An object of my invention is to prevent the accidental escape of thethread from the traveler due to the above or other causes.

Other and ancillary objects of the invention will hereinafter appear.

My invention consists, therefore, in the means for producing the resultsabove referred to substantially as hereinafter claimed.

In the accompanying drawing,

Figure 1 is a fragmentary sectional view oi a portion of a commontwisting machine in which my invention is incorporated,

Figure 2, a fragmentary transverse section of a ring showing my travelerin running position thereon, and

Figure S, a similar section of the ring showing my traveler in inactiveposition thereon.

Similar reference characters indicate similar parts throughout theviews.

Referring in detail to Figure 1, 4 indicates the delivery rolls of atwisting machine, feeding the yarn 5 through guide 6 to the spool 7 uponthe revolving spindle 8. 9 is the traverse rail carrying rail ring 10 ofthe vertical type supporting a ring traveler 11 also of vertical type.The rail 9 moves up and down to guide the yarn upon the the top of thering from its original position in. the rear portion of the upper horn,and escapesspool while the traveler is impelled by the yarn in acircular course upon the ring.

The traveler 11 comprises in this instance a shank 12, a foot or lowerhornlB, a head or upper horn 14. The traveler is preferably of steel,le() bronze, or ferrous alloys, and may be of Vany preferred crosssectional contour.

The shank has a relatively short portion 16 continuous with the foot 13inclined upwardly and forwardly and a longer rearwardly and upwardlyinclined portion 17, forming with the portion 16 bend 18 near the bottomof the shank engageable with the inner face of the ring and constitutinga pivot or fulcrum. The shank portion 1'7 is continuous with theforwardly directed l70 top portion 19 of the head 14 terminating in thedownwardly directed tip portion 20 of the latter. The rounded angleformed by the junction of the shank portion 17 andv top portion 19 ofthe head defines the loop 21 through which the yarn 5 normally passes.The backl of `the tip portion 20, adjacent its free end, is providedwith a forwardly and downwardly inclined transversely disposed recess 22extending the width of the tip.

In running position the traveler is laterally tilted, as evident inFigure l, and orwardlytilted, as shown in Figure 2, wherein itsYtipportion 20 is spaced from the outer face of the ring. In thisposition the shank portion 16 is upwardly and forwardly inclined. Thethread 9 passes as usual through the loop 21 of the traveler.

When, however, the traveler for any reason discontinues its advance, thelengthwise tension of the yarn is relaxed, and the traveler drops.During this drop the traveler tilts rearwardly upon its pivot 18, in thedirection of the arrow in Figure 3, and assumes the position shown insaid iigure. Namely the top 19 of the traveler head rests upon the topof the ring 10, and the 95 tip portion 20 engages the outer face of thering at its upper margin, as at 23.

The rearward tilt of the upper portion of the traveler was occasioned bythe greater weight of the upper portion of the traveler and by thelocation of the bend or pivot 18 in the lower portion oi the travelerrather than at or above the center of the shank.

In its inactive position the tip portion 20 of the traveler forms anabutment which impedes11l05 the escape of the yarn when, under theinfluence of torsional power, it endeavors to force its way over the topof the ring. If, however, the torsion induces the yarn, in its travelalong the inner contour of the traveler head, over the ringV :113.

top and between the traveler tip and outer face of the ring, the yarnmoves down into the recess 22. I-Iere the yarn remains seated until thetraveler resumes its operation, whereupon the yarn assumes its originalposition released from the slot.

It will be understood that any changes of detail of construction, withinthe scope of the 1anguage of the claims, is permissible withoutdeparting from the spirit of the invention.

I claim:-

1. A traveler for spinning and twisting rings having a lower shankportion and an upwardly and rearwardly inclined upper shank portion, afoot upon the end of the lower shank portion, and a head upon the uppershank portion, said head provided with a transverse recess extendinginto the head from the inner face thereof.

2. A traveler for spinning and twisting rings, having a lower shankportion and an upwardly and rearwardly inclined upper shank portion, afoot upon the end of the lower shank portion, and a head upon the uppershank portion, said head provided with an inclined transverse recessextending into the head from the inner face thereof.

3. A traveler for spinning and twisting rings having a lower shankportion and an upwardly and rearwardly inclined upper shank portion, afoot upon the end of the lower shank portion, and a head upon the uppershank portion having a tip provided with a transverse recess extendinginto the tip from the inner face thereof.

4. A traveler for spinning and twisting rings having a lower shankportion and an upwardly and rearwardly inclined upper shank portion, afoot upon the end of the lower shank portion, and a head upon the uppershank portion having a tip provided with an inclined transverse recessextending into the tip from the inner face thereof.

5. A traveler for spinning and twisting rings having a shank, a foot atone end thereof and a head at the other end provided with a transverserecess extending into the head from its inner face reducing thethickness of the head at that point.

6. A traveler for spinning and twisting rings having a shank, a foot atone end thereof` and a head at the other end having a tip provided witha transverse recess extending into the tip from the inner face of thetip reducing the thickness thereof at that point.

'7. A traveler for spinning and twisting rings having a shank, a foot atone end thereof and a head at the other end having a tip provided withan inclined transverse recess extending into the tip from the inner faceof the tip reducing the thickness thereof at that point.

8. In combination, a vertical ring having an inner face and an outerface, and a traveler including a shank comprising converginginclinedportions fulcrurned upon the inner face of the ring, a foot uponone of the inclined portions engageable with the ring, and head upon theupper inclined portion engageable with the outer face of the ring, saidhead provided with a transverse recess extending into the head from theinner face thereof.

9. In combination, a vertical ring having an inner face and an outerface, and a transversely tiltable traveler including an angular shankfulcrurned intermediate its length upon the inner face of the ring, afoot upon the lower end of the shank, and a head upon the upper end ofthe shank spaced from the outer face of the ring when the'traveler istilted in one direction, and adapted to abut against said outer facewhen the traveler is tilted in the opposite direction, said headprovided with a transverse recess extending into the head from the innerface thereof.

10. In combination, a vertical ring having anY from the inner facethereof, and a foot upon the lower end of the shank engageable with thering when the traveler tilts in the other direction.

GEORGE H. GILLIGAN.

